Daikin CTXS15K2V1B User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Indoor Unit
Inverter
Wall Mounted Type
1.5/2.0/2.5/3.5 kW Class
Si041258EA

Service Manual
Removal Procedure
Indoor Unit
zHeat Pump
CTXS15K2V1B
CTXS35K2V1B
FTXM20K3V1B
FTXM25K3V1B
FTXS20K2V1B
FTXS25K2V1B

Si041258EA
Removal Procedure 1
Table of Contents
1. Air Filters .................................................................................................2
2. Horizontal Blade......................................................................................3
3. Front Panel..............................................................................................4
4. Front Grille ..............................................................................................5
5. Vertical Blade ASSYs..............................................................................6
6. Electrical Box ..........................................................................................7
7. Swing Motor / PCBs ................................................................................9
8. Indoor Heat Exchanger .........................................................................13
9. Fan Rotor / Fan Motor...........................................................................16
Note: The illustrations may be slightly different depending on the model.

Air Filters Si041258EA
2Removal Procedure
1. Air Filters
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1. Remove the air filters. The air filter is not marked
for difference between the
right and left sides.
The air filter can be set
easily by inserting it along
the guides.
1Open the front panel.
2Pull out the air filter
downward and remove
it.
3Remove the other air
filter in the same way.
Insert the air filter with the
“FRONT” mark faced up.
Be sure to insert the hooks
(at 2 lower positions) when
mounting the air filter.
2. Remove the Titanium
apatite photocatalytic
air-purifying filters.
1Remove the Titanium
apatite photocatalytic
air-purifying filter ASSY
by unfastening the 2
projections from the
back of the air filter.
2Remove the Titanium
apatite photocatalytic
air-purifying filter from
its frame (at 5 positions)
by bending it.
To prevent the damage, do
not remove the Titanium
apatite photocatalytic air-
purifying filter from the frame
when cleaning it.
The right and left filters are
interchangeable.
Hook
Front panel
Air filter
(R18155)
Projection
(R18156)
Titanium apatite
photocatalytic
air-purifying filter
Air filter
(back side)
Hook
(R8027)

Si041258EA Horizontal Blade
Removal Procedure 3
2. Horizontal Blade
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1Open the horizontal
blade.
The center shaft can be
released easily by bending
the blade.
2Unfasten the center
shaft while bending the
horizontal blade
slightly.
Installation procedure
1. Since the key pattern hook
is provided, rotate the blade
and fit it to the right shaft
first.
2. Fit the blade to the center
and left shafts.
3Unfasten the left shaft.
4Unfasten the right shaft.
5Remove the horizontal
blade.
Horizontal blade
(R18157)
(R16661)
Shaft
(R16662)
Key pattern hook
Left Right
Shaft
(R16663)

Front Panel Si041258EA
4Removal Procedure
3. Front Panel
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1Open the front panel
over the position where
it stops.
2Release the right rotary
shaft.
The rotary shaft on each
side can be released easily
by sliding each shaft inward.
3Release the left rotary
shaft.
4Remove the front panel. When reassembling the
front panel, fit the right and
left rotary shafts one by one
into the grooves and fully
push them in position.
Left side
Front panel
Right side
(R16664)
Right
(R16665)
Rotary shaft
(R16666)
Left Rotary shaft
Rotary shaft
(R16667)

Si041258EA Front Grille
Removal Procedure 5
4. Front Grille
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1Remove the 2 screws.
2Unfasten the 3 hooks at
the top.
3Pull the upper part of
the front grille out and
lift the lower part up,
and then remove the
front grille.
The convex marks (...) on
the front panel indicate the
position of the hooks.
When reassembling, make
sure that all the 3 hooks are
fastened.
(R16668)
(R18158)
Hook
Front grille
(R12715)

Vertical Blade ASSYs Si041258EA
6Removal Procedure
5. Vertical Blade ASSYs
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1Unfasten the right and
left hooks of the fan
guard with pliers.
Narrow the edges of the
hook to unfasten it.
2Unfasten the 4 hooks at
the bottom. Remove the
fan guard.
Remove the other fan guard
in the same way.
3Unfasten the hooks of
the vertical blade ASSY
at the upper 2 positions.
A vertical blade ASSY has 6
fins. It is impossible to
replace only one fin.
The vertical blade ASSY is
not marked for difference
between right and left.
4Unfasten the 3 hooks at
the shaft mounting part
by pressing them with a
flat screwdriver.
Remove the other vertical
blade ASSY in the same
way.
5Remove the vertical
blade ASSY.
Hook
Fan guard
Hook
(R14608)
(R11646)
Hook
(R11647)
Hook
(R18159)
Hook
Vertical blade ASSY
(R8022)
Hook

Si041258EA Electrical Box
Removal Procedure 7
6. Electrical Box
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1. Disconnect the connecting
wires.
1Remove the screw and
remove the service
cover.
2Remove the screw of
the wire fixture.
3Remove the screws of
the terminal board and
disconnect the
connecting wires.
4Pull out the indoor heat
exchanger thermistor.
Take care not to lose the clip
of thermistor.
(R18160)
Service cover
(R18237)
Wire
fixture
Connecting
wires
Terminal board
(R12045)
Indoor heat exchanger thermistor
Clip
(R11268)
Thermistor

Electrical Box Si041258EA
8Removal Procedure
2. Remove the electrical box.
1Remove the screw and
release the earth /
ground wire.
2
3
Disconnect the
connector [S200].
Release the fan motor
harnesses from the
hook.
[S200]: fan motor
4Remove the screw of
the electrical box.
When reassembling, catch
the hook at the back of the
electrical box.
5Slide the electrical box
to the right first and
detach the horizontal
blade from the electrical
box.
6Pull out the electrical
box.
Step Procedure Points
Screw
Earth /
ground
wire
(R18956)
(R15844)
[S200]
(R16649)
Hook
(R18162)
(R18163)
Hook
Bottom frame